Accumulation and partitioning of mineral nutrients in wheat as influenced by nitrogen form

Xingting Wang, Frederick E Below

Research output: Contribution to journalArticle

Abstract

The form of nitrogen (N) [e.g., nitrate (NO3-) and ammonium (NH4+)] available to plants affects many growth processes, including mineral nutrient acquisition. The objective of this study was to assess the effects of N form on the accumulation and partitioning of mineral nutrients in wheat. Two species of spring wheat (Triticum aestivum L. cv. Len and Triticum durum Desf. cv. Inbar) were grown hydroponically in the greenhouse with N supplied as either all NO3-, or all NH4+, or an equal mixture of the two forms (mixed N). Plants were harvested after 21 days of growth, divided into shoots and roots and each part analyzed for nine mineral elements [phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), and boron (B)]. The accumulation and partitioning of the mineral nutrients was dependent on the wheat species, the N form, and the nature of the ion. Inbar plants always accumulated more of each element than did Len. Compared with all NO3- nutrition, mixed N increased the whole plant and/or shoot accumulation of P, K, Cu, and B, but not Ca, Mg, Fe, Mn, and Zn; while all NH4+ decreased these values for most elements. With few exceptions, N form did not affect either the accumulation or partitioning of Mg and Fe. Plants grown with all NO3- accumulated more Mn and Zn than those receiving mixed N or all NH4+, while the partitioning of both ions was not affected by N form. When grown with mixed N or all NH4+, less P, K, Cu, and B was partitioned to the roots compared to plants receiving all NO3-. These results demonstrate the differential effects of N form on mineral nutrient acquisition and nutrient use by wheat, which may be related to N-form induced differences in plant growth.

Original languageEnglish (US)
Pages (from-to)49-61
Number of pages13
JournalJournal of Plant Nutrition
Volume21
Issue number1
DOIs
StatePublished - Jan 1 1998

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Triticum
Minerals
Nitrogen
minerals
Food
wheat
nutrients
nitrogen
Manganese
Magnesium
manganese
Zinc
magnesium
zinc
Growth
Plant Shoots
Ions
ions
Calcium
calcium

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science

Cite this

Accumulation and partitioning of mineral nutrients in wheat as influenced by nitrogen form. / Wang, Xingting; Below, Frederick E.

In: Journal of Plant Nutrition, Vol. 21, No. 1, 01.01.1998, p. 49-61.

Research output: Contribution to journalArticle

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